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<div class="title">memalloc.hpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*!</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">\mainpage The mainpage for MemAlloc interface by Oleg</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">ATTENTION, C++11</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">Please, look at this documentation in generated html or latex files.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">Several words about how to implement this interface.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">First of all, why didn&#39;t I write usual interface with virtual functions?</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">Answer is quite simple: MemoryAllocator uses template methods but template</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">methods are not allowed to be virtual in C++. </span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">So the only way to separate interface from realization is to use one special</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">pointer in private section named $(CLASS_NAME)Impl and pass concreate </span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">realization class via constructor. In the interface file we use </span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">forward-declaration to declare Implementation classes so interfaces file is </span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">self-sufficient to include it into every project part. As you can see, </span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">our goal is reached. This file contains only interfaces without realization.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">This method is widely-used and called pimpl-idiom (http://www.gotw.ca/gotw/024.htm,</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">http://www.gotw.ca/gotw/028.htm).</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">And now several words about how realization file should be structured.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">One should write realization for all classes and their $(CLASS_NAME)Impl parts.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment">MemAlloc is a singleton. It&#39;s your care how to implement singleton but method Init </span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment">should construct it and static method Deinit - destroy. When MemAlloc object is</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">constructed one should use method Instance to get refference for it. </span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment">Constructor of MemAlloc is private because it&#39;s supposed to be called only from</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment"> Init function. And small attention. BE VERY VERY CAREFULL WHEN USING SMP</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">SINGLETON. (I advice you to read this small article </span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">http://www.aristeia.com/Papers/DDJ_Jul_Aug_2004_revised.pdf)</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment">And now about SmartPtr. As you can see it has public constructor which</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment">takes pointer to SmartPtrImpl class. But it&#39;s critical for us to allow</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">a SmartPtr construction only for Memory Allocator. But we take it automatically</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">because nobody has declaration of SmartPtrImpl. Logically SmartPtrImpl and </span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment">MemAllocImpl are two parts of the same mechanise called Memory allocator so </span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment">they should be friends of each other. Thus only MemAllocIMpl will be able to </span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment">construct SmartPointers.</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment">And finally about exception handling policy.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">I decided to handle all errors using exceptions. Thus dynamic memory errors</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">will throw std::bad_alloc exception, all problems with swap file will throw</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">std::ios_base::failure exceptions. Stop. One moment If you want ofstream behave</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">this way you should manually set it&#39;s exception policy flags</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment"> (http://www.cplusplus.com/reference/ios/ios/exceptions/).</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment">Thank you for your reading. I will be happy to answer all your questions and</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">listen to your proposals.</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">Oleg &lt;onponomarev@gmail.com&gt;</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="preprocessor">#ifndef MEMALLOCATOR_HPP_</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define MEMALLOCATOR_HPP_</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">#include &lt;exception&gt;</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="keyword">class </span>MemAllocImpl;</div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="classSmartPtrImpl.html">   62</a></span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt; <span class="keyword">class </span><a class="code" href="classSmartPtrImpl.html">SmartPtrImpl</a>;</div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="code" href="classSmartPtr.html">   63</a></span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt; <span class="keyword">class </span><a class="code" href="classSmartPtr.html" title="SMartPtr interface class.">SmartPtr</a>;</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">//! Memory Allocator interface class</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment"></span><span class="comment">/*! To use MemAlloc class for memory management you should first call Init method.</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment">    Finaly you should call Deinit method. To allocate some memory you should use</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">    Alloc call and next play a lot with SmartPtr&#39;s. When you suppose that you don&#39;t</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">    need memory, please call Free method. Please, look for SmartPtr documentation </span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment">    for more information. */</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="code" href="classMemAlloc.html">   71</a></span>&#160;<span class="keyword">class </span><a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a> {</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keyword">public</span> :</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="comment"></span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment">    /*! Init function. This function must be called before the first call</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment">        to Alloc; Please, don&#39;t forget to call Deinit after Init</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment">    */</span><span class="comment"></span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="comment">    /*!</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment">      \param mem_size RAM limit for allocator</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">      \param swap size for allocaor</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">      \param swap_path file path and name</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">      \throw std::bad_alloc exception on out-of-memory</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">          \throw std::ios_base::failure for file error</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">      \throw MemAllocException </span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classMemAlloc.html#a0aec1afcebdd8b7bb9920326bbc733ac">Init</a>(<span class="keywordtype">size_t</span> mem_size, <span class="keywordtype">size_t</span> swap_size, </div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        <span class="keyword">const</span> std::string&amp; swap_path);</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">    //! Instance function returns correct MemAlloc&amp;</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment"></span><span class="comment">    /*!</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="comment">      \throw MemAllocException </span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keyword">static</span> <a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a>&amp; <a class="code" href="classMemAlloc.html#a386499c433d4190715c1ed701bb5eb6e" title="Instance function returns correct MemAlloc&amp;.">Instance</a>();</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment">    //! Deinitialize MemAlloc. </span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment"></span>    <span class="comment">/*</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment">      \throw MemAllocException </span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classMemAlloc.html#af50d45b65c86135773b24cb47757dadb" title="Deinitialize MemAlloc.">Deinit</a>();</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    <span class="comment"></span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="comment">    //! Memory Allocate function.</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment"></span><span class="comment">    /*!</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">       Call to this function allocates arrey of elem_count elements of </span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment">       type T and returns SmartPtr&lt;T&gt; to acess allocated memory.</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment">       Default array size is 1.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">      \tparam T some concreate integer</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment">      \param elem_count elements count in array we want to allocate.</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment">      \return SmartPtr&lt;T&gt; which should be used to access memory</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="comment">      \throw std::bad_alloc exception on out-of-memory</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="comment">          \throw std::ios_base::failure for file error</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="comment">      \throw MemAllocException </span></div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    <a class="code" href="classSmartPtr.html" title="SMartPtr interface class.">SmartPtr&lt;T&gt;</a> <a class="code" href="classMemAlloc.html#ae246263fcde28c27cfccf1fc18d4c3ae" title="Memory Allocate function.">Alloc</a>(<span class="keywordtype">size_t</span> elem_count = 1);</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment">    //! Memory Free function.</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment"></span><span class="comment">    /*!</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="comment">        Please be carefull with this function to prevent double-free.</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="comment">      \tparam T some concreate integer</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment">      \param ptr SmartPtr pointed to memory we want to free</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment">      \throw std::bad_alloc exception on out-of-memory</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">          \throw std::ios_base::failure for file error</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="comment">      \throw MemAllocException </span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="classMemAlloc.html#a2a0f4a1426bba45b46d7706c7dcbb89d" title="Memory Free function.">Free</a>(<span class="keyword">const</span> <a class="code" href="classSmartPtr.html" title="SMartPtr interface class.">SmartPtr&lt;T&gt;</a>&amp; ptr);</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    </div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <span class="keyword">private</span> :</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="comment">    /*! Private constuctor getting private forward-declared class pointer with </span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="comment">        allocator implementation. It&#39;ll be called by Init method.</span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    <a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a>(MemAllocImpl *pimpl);</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    <span class="comment"></span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="comment">    //! Deleted default constructor to preserve singleton properties</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="comment"></span>    <a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a>() = <span class="keyword">delete</span>;<span class="comment"></span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="comment">    //! Deleted copy constructor to preserve singleton properties</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="comment"></span>    <a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a>(<span class="keyword">const</span> <a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a>&amp;) = <span class="keyword">delete</span>;<span class="comment"></span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="comment">    //! Deleted assign operator to preserve singleton properties</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="comment"></span>    <a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="comment">    //! MemAlloc private destructor</span></div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;<span class="comment"></span>    ~<a class="code" href="classMemAlloc.html" title="Memory Allocator interface class.">MemAlloc</a>();</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    <span class="comment"></span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="comment">    //! Pointer to MemAllocImpl - MemAlloc interface implementation</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="comment"></span>    MemAllocImpl *pimpl_;</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;};</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;<span class="comment">//! SMartPtr interface class</span></div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;<span class="comment"></span><span class="comment">/*! Object of this class is returned by Allocate in MemAlloc. One should use</span></div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;<span class="comment">    SmartPtr&#39;s instead of usual C pointers everywhere in his code. This will </span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;<span class="comment">    allow MemAlloc to know when memory is actively used and when it may be </span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="comment">    unloaded to a swap area.</span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="comment">*/</span> </div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt; </div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="keyword">class </span><a class="code" href="classSmartPtr.html" title="SMartPtr interface class.">SmartPtr</a> {</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    <span class="comment"></span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="comment">    //! Explicitely delete default constructor </span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="comment"></span>    <a class="code" href="classSmartPtr.html#a5bfbe13632132eae5d0a2e757194dde5" title="Explicitely delete default constructor.">SmartPtr</a>() = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;<span class="comment">    /*! Constructor getting implementation pointer is only way to</span></div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="comment">        construct SmartPtr</span></div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;<span class="comment">        </span></div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="comment">              \param pimpl pointer to a realization</span></div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="comment">          \throw std::bad_alloc exception on out-of-memory</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;<span class="comment">    </span></div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <a class="code" href="classSmartPtr.html#a5bfbe13632132eae5d0a2e757194dde5" title="Explicitely delete default constructor.">SmartPtr</a>(<a class="code" href="classSmartPtrImpl.html">SmartPtrImpl&lt;T&gt;</a> *pimpl);</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;<span class="comment">    /*! Simple copy constructor for reference counter</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="comment">          \throw std::bad_alloc exception on out-of-memory</span></div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    <a class="code" href="classSmartPtr.html#a5bfbe13632132eae5d0a2e757194dde5" title="Explicitely delete default constructor.">SmartPtr</a>(<span class="keyword">const</span> <a class="code" href="classSmartPtr.html" title="SMartPtr interface class.">SmartPtr&lt;T&gt;</a>&amp; ptr);<span class="comment"></span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="comment">    //! Simple destructor for reference counter</span></div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <a class="code" href="classSmartPtr.html#a894b8bfc8026d8837a43224eb3054fa9" title="Simple destructor for reference counter.">~SmartPtr</a>();</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="comment">    /*! Simple operator = for reference counter</span></div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="comment">          \throw std::bad_alloc exception on out-of-memory</span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    <a class="code" href="classSmartPtr.html" title="SMartPtr interface class.">SmartPtr</a>&amp; <a class="code" href="classSmartPtr.html#ae375044a9b90cb0e54a952b3fb11c8dc">operator=</a>(<span class="keyword">const</span> <a class="code" href="classSmartPtr.html" title="SMartPtr interface class.">SmartPtr</a>&amp; ptr);</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="comment">    ///@{</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="comment"></span><span class="comment">    /*! Usual smart-pointer access operators. Access may take a lot of time </span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="comment">        because of possible swapping. THeese functions may throw!</span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;<span class="comment">      \throw std::bad_alloc exception on out-of-memory</span></div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;<span class="comment">          \throw std::ios_base::failure for file error</span></div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="comment">      \throw MemAllocException </span></div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;<span class="comment">    */</span>  </div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    T&amp; <a class="code" href="classSmartPtr.html#a529b60de9c5d83d362f9ebfb702ba5cc">operator*</a>();</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    <span class="keyword">const</span> T&amp; <a class="code" href="classSmartPtr.html#a529b60de9c5d83d362f9ebfb702ba5cc">operator*</a>() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    T* operator-&gt;();</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;    <span class="keyword">const</span> T* operator-&gt;() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;    T&amp; operator[](<span class="keywordtype">size_t</span> idx);</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    <span class="keyword">const</span> T&amp; operator[](<span class="keywordtype">size_t</span> idx) <span class="keyword">const</span>;<span class="comment"></span></div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;<span class="comment">    ///@}</span></div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;<span class="comment"></span><span class="comment"></span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="comment">    /*! Using Get/Release methods one can get usual C pointer from SmartPtr and lock</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="comment">        memory for swapping until Release method called</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="comment">      \throw std::bad_alloc exception on out-of-memory</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment">          \throw std::ios_base::failure for file error</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment">      \throw MemAllocException </span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;<span class="comment">    */</span><span class="comment"></span></div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="comment">    ///@{</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="comment"></span>    T* <a class="code" href="classSmartPtr.html#a793b6100501f7bf73ab71adbb354995c">Get</a>();</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    <span class="keywordtype">void</span> Release();<span class="comment"></span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="comment">    ///@}</span></div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    <span class="keyword">private</span>:</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    <a class="code" href="classSmartPtrImpl.html">SmartPtrImpl&lt;T&gt;</a> *pimpl_;</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;};</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="comment">//! General exception class for MemAlloc</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"><a class="code" href="classMemAllocException.html">  230</a></span>&#160;<span class="comment"></span><span class="keyword">class </span><a class="code" href="classMemAllocException.html" title="General exception class for MemAlloc.">MemAllocException</a> : <span class="keyword">public</span> std::exception {</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="comment">    /*! An ErrorCode enum contains several constants which may be used in</span></div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="comment">        MemAllocException and derived exception classes */</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6">  235</a></span>&#160;    <span class="keyword">enum</span> <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6">ErrorCode</a> { </div>
<div class="line"><a name="l00236"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6aa4b97f6ea94cd2d21a95c5c160653ac8">  236</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6aa4b97f6ea94cd2d21a95c5c160653ac8">E_NOMEM</a>, <span class="comment">/*!&lt; Not enough memory to load memory region from swap */</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6af679a18c42956d57ea9faba187a53abc">  237</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6af679a18c42956d57ea9faba187a53abc">E_NOBUFS</a>, <span class="comment">/*!&lt; Too fragmented RAM */</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a7bcf7d48ac8a19c04a0640a860962a41">  238</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a7bcf7d48ac8a19c04a0640a860962a41">E_2BIG</a>, <span class="comment">/*!&lt; Requested memory region is too big for allocator */</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a3008655d86e99bc5381d30a77a0849d0">  239</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a3008655d86e99bc5381d30a77a0849d0">E_MLINK</a>, <span class="comment">/*!&lt; Lack of free memory identifiers */</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a586f122668724e3f1e01f3fbeeba75be">  240</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a586f122668724e3f1e01f3fbeeba75be">E_ALREADY</a>, <span class="comment">/*!&lt; Allocator has already been initialized */</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a50648e353fcb42e61010e9ddd176941d">  241</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a50648e353fcb42e61010e9ddd176941d">E_UNINITIALIZED</a>, <span class="comment">/*!&lt; Allocator is unitialized */</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a2d8b36b976231e98b10f6139dfe65bf0">  242</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a2d8b36b976231e98b10f6139dfe65bf0">E_INVALID_INIT_SIZES</a>, <span class="comment">/*!&lt; Swap area is smaller than mem area */</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a8d5941f2fc2044dc2a192255b395563d">  243</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a8d5941f2fc2044dc2a192255b395563d">E_ACTIVE_MEMORY_FREE</a>, <span class="comment">/*!&lt; Someone tried to Free memory which </span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="comment">                                  is currently in use */</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"><a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a9ac26b04b79de49b3e484eeb4c299432">  245</a></span>&#160;        <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6a9ac26b04b79de49b3e484eeb4c299432">E_OUT_OF_BOUNDS</a> <span class="comment">/*!&lt; array index is out of bounds */</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    };</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="comment">    //! No default constructor</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="comment"></span>    <a class="code" href="classMemAllocException.html#a8dd593d188ef7bb03a78c175504070e0" title="No default constructor.">MemAllocException</a>() = <span class="keyword">delete</span>;<span class="comment"></span></div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="comment">    //! Only constructor taking error_code and error_message </span></div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment"></span>    <a class="code" href="classMemAllocException.html#a8dd593d188ef7bb03a78c175504070e0" title="No default constructor.">MemAllocException</a>(<a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6">ErrorCode</a> error_code, <span class="keyword">const</span> std::string&amp; error_msg);<span class="comment"></span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="comment">    //! Virtual destructor </span></div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment"></span>    <span class="keyword">virtual</span> <a class="code" href="classMemAllocException.html#ad3d89ad802e2f894d93a6833b79e1f8a" title="Virtual destructor.">~MemAllocException</a>() noexcept;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment">    //! Standart std::exception what redefinition() </span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment"></span>    virtual const <span class="keywordtype">char</span> *<a class="code" href="classMemAllocException.html#a34ef14ce808575d5413a1460b07849e1" title="Standart std::exception what redefinition()">what</a>() const noexcept;<span class="comment"></span></div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="comment">    //! GetErrorCode method returns ErrorCode</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;<span class="comment"></span>    virtual <a class="code" href="classMemAllocException.html#ac3fd2c587adfa5e5b0103726b7a904a6">ErrorCode</a> <a class="code" href="classMemAllocException.html#a647676d7d029b6bb5483e10a2126c07f" title="GetErrorCode method returns ErrorCode.">GetErrorCode</a>() const noexcept; </div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;};</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="comment">/*! Exception class for MemAlloc which is supposed to be used for fixable errors.</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="comment">    For example sometimes it&#39;s enough simply to wait for the empty memory in RAM.</span></div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;<span class="comment">    This exception class is a convenient way to catch those exceptions ant try again.</span></div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"><a class="code" href="classMemAllocWaitException.html">  266</a></span>&#160;class <a class="code" href="classMemAllocWaitException.html">MemAllocWaitException</a> : public <a class="code" href="classMemAllocException.html" title="General exception class for MemAlloc.">MemAllocException</a> {</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="comment">    //! Only constructor taking error_code and error_message </span></div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="comment"></span>    <a class="code" href="classMemAllocWaitException.html">MemAllocWaitException</a>(<span class="keywordtype">size_t</span> error_code, <span class="keyword">const</span> std::string&amp; error_msg);<span class="comment"></span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;<span class="comment">    //! Virtual destructor </span></div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="comment"></span>    <span class="keyword">virtual</span> ~<a class="code" href="classMemAllocWaitException.html">MemAllocWaitException</a>() noexcept;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;};</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="preprocessor">#endif //MEMALLOCATOR_HPP_</span></div>
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